Method, apparatus and controller for managing memories

a memory and controller technology, applied in the field of methods and systems for managing memories, can solve the problems of limited capacity of flash memories, cost and capacity waste,

Active Publication Date: 2009-11-19
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Accordingly, the present invention is directed to a method for managing memories, in which by setting all the memories into a compatible format, different types of flash memory can be mixingly managed.

Problems solved by technology

However, since hardware structures of the flash memories fabricated by different manufacturers are different, for example, number of pages, number of blocks, number of sectors, error checking and correction (ECC) redundancy area sizes, NOPs, R / W timings and special commands of the flash memories are different, a controller of each flash memory module is limited to connect the flash memories with the same capacity and the same type, so that capacities thereof are limited.
For example, if 520 MB memory spaces are required, only two 512 MB flash memories or three 256 MB flash memories can be used, and therefore cost and capacities of the flash memories are wasted.

Method used

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  • Method, apparatus and controller for managing memories
  • Method, apparatus and controller for managing memories
  • Method, apparatus and controller for managing memories

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Embodiment Construction

[0046]Since different types of flash memory have different hardware structures, to manage the different types of flash memory, all of the flash memories have to be set into compatible formats, and the settings are pre-stored. Thereafter, when a data accessing command is received, the correct data accessing position and data accessing method are then obtained by an inquiry, so that data accessing operations between different types of flash memory can be performed. Accordingly, the present invention provides a method, a system and a controller for managing different types of memory based on the above concept. To fully convey the concept of the present invention, embodiments are provided below for describing the present invention in detail.

[0047]FIG. 1 is a block diagram illustrating a system for managing memories according to an embodiment of the present invention. Referring to FIG. 1, the system 100 includes a first type memory 110, a second type memory 120 and a controller 130. The ...

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Abstract

A method, an apparatus and a controller for managing memories are provided. In the present invention, a data accessing format of each of the memories is adjusted such that the accessing units for each data accessing operation are unified. A mapping table is then established for recording the adjusted data accessing format. When a data accessing command is received from a host, the mapping table is inquired so as to execute the data accessing command. Accordingly, incompatibility of hardware structures can be resolved, and management of different types of flash memory can be achieved.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 97118235, filed on May 16, 2008. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a method and a system for managing memories. More particularly, the present invention relates to a memory, an apparatus and a controller for managing multiple kinds of memories.[0004]2. Description of Related Art[0005]With a quick development of digital camera, cell phone and MP3, demand of storage media by customers is increased greatly. Since a flash memory has the advantages of non-volatile, energy saving, small size and none mechanical structure etc., it is suitable to function as a built-in memory for portable products, and especially for portable battery-powered products such as laptop computers ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F12/02
CPCG06F13/1694
Inventor YEH, CHIH-KANG
Owner PHISON ELECTRONICS
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